Arizona IID Guide
Your Arizona ignition interlock, explained.
Cost, how long you really need it, early removal, and — most importantly — how a false violation gets caught before it adds months to your time. Understand the device, then get set up the right way with one point of contact who watches the false flags for you.
12–18 mo
typical AZ interlock term
$80–150
average monthly cost
1 call
to set it up & stay protected
Quick answer
How long do I need an interlock in Arizona?
A certified ignition interlock device is required for most Arizona DUI convictions. The term depends on your charge:
*Early removal at 6 months is possible for a standard first offense with no violations. Per A.R.S. § 28-1381 & § 28-3319.
Everything you need to comply
Find your answer, then get set up.
Straight, Arizona-specific answers with the statutes behind them. When you are ready, one call to AES sets up your device with a certified provider and puts a violation shield around you.
What it really costs
Install, monthly lease, calibration, and the fees nobody warns you about.
See the breakdownWho needs it & how long
12 vs. 18 vs. 24 months by charge — and the A.R.S. rules behind each.
Check your termHow the device works
Startup test, rolling retests, calibration, lockouts, and nightly data logging.
Understand the deviceViolations & false flags
What counts, what does not, and how a false positive gets challenged before it costs you months.
Protect yourselfGetting it removed
Early-removal rules, the exact paperwork, and how to finish clean.
Plan your removalChoosing a provider
How certified providers compare — and why letting AES coordinate protects you.
Compare the right wayCost at a glance
What an Arizona interlock actually runs you.
Prices vary by certified provider, but the shape is the same: a modest install, then a monthly lease that bundles the device and required calibrations. Over a 12-month term, most drivers spend roughly $1,100–$1,900 all in.
The expensive surprise is not the device — it is a violation. A single false positive can extend your term and pile on re-test and re-set fees. That is the cost AES is built to prevent.
Full cost breakdown| Item | Typical range |
|---|---|
| Installation (one-time) | $70 – $150 |
| Monthly lease + calibration | $80 – $150 / mo |
| Calibration visits | ~every 30–60 days |
| MVD / program fees | varies |
| Violation reset (avoidable) | extra fees + lost time |
One bad blow shouldn’t cost you three months.
Mouthwash, a breath mint, a sip of coffee, illness, or a mechanic disconnecting the unit — these trigger “violations” that are not your fault, and the device reports them automatically. Left alone, they can reset your clock. AES monitors your interlock data logs and works directly with the provider to catch and reverse false violations before they hit your record. And you call AES — not the installer.
We coordinate the install
One call, a certified Arizona provider, no runaround.
Log every incident
Record mouth-alcohol blows, lockouts, or shop work the moment they happen.
We monitor and dispute false violations
Your interlock data logs are reviewed and disputed with the provider, so a false flag does not quietly extend your term.
Get set up the right way — in one call.
AES coordinates your install with a certified Arizona provider, handles your screening, and monitors your data logs for false violations — the mouth-alcohol reading, the calibration error, the time someone else blew into the unit. When something looks wrong, you call AES, and AES disputes it with the provider for you.
By city
Interlock setup across Arizona
Common questions
Arizona interlock, answered.
How long do you need an ignition interlock in Arizona?
A standard first-offense DUI requires the interlock for 12 months, though you may qualify to remove it after 6 months with a clean record. Extreme DUI (0.15+ BAC) is 12 months with no early removal. Super Extreme DUI (0.20+) is 18 months, and Aggravated (felony) DUI is 24 months or more. See A.R.S. § 28-1381 and § 28-3319.
How much does an ignition interlock cost in Arizona?
Expect a one-time installation of roughly $70–$150 plus about $80–$150 per month for the lease and calibration, depending on the certified provider. Over a 12-month term, most drivers spend roughly $1,100–$1,900 all in. Most of the recurring cost is monthly monitoring and required calibration visits.
What happens if I get an interlock violation in Arizona?
A reported violation — such as a failed or missed rolling retest, or a lockout — can reset or extend your interlock period, often by months. Many violations are false positives (mouth alcohol from food, mouthwash, or illness) or are caused by a mechanic. They can frequently be disputed if you document them right away, which is exactly what AES helps drivers do.
Can a false positive be removed?
Often, yes. Mouth alcohol from food, mouthwash, or illness can trigger a positive that is not drinking. Because the body eliminates alcohol at only about 0.02 per hour, a reading that drops from 0.09 to 0.00 in minutes is chemically impossible for real alcohol — it is mouth alcohol. AES reviews your data logs for that signature and disputes false violations with the provider.
Do I have to use a specific interlock company in Arizona?
You must use a device from an Arizona MVD-certified provider, but you choose which one. Rather than going direct, many drivers have AES coordinate the setup so they get one point of contact, help understanding the requirements, and protection against false violations.
Can I get the interlock removed early?
For a standard first offense, Arizona allows removal at 6 months if you complete the required screening or treatment and have no violations in the period. Extreme, Super Extreme, and aggravated offenses generally must serve the full term.
How does the device measure alcohol?
It uses a fuel-cell sensor with a heated platinum element. A deep-lung breath sample passes over it; any alcohol evaporates and produces an electrical charge — the more alcohol, the stronger the charge. The device uploads its data nightly to ADOT servers.
What if a mechanic or valet sets off my interlock?
It can be logged as a circumvention. Warn anyone who touches your car, keep a dated repair receipt, and report it to AES immediately so it is not counted against you.
An interlock is usually one piece of a bigger DUI situation. Track your deadlines and paperwork with the first-24-hours timeline and review your defense options. Ready to comply and stay protected? Call AES at (480) 809-6230.